Trefoil production for pasture and hay /
United States.Agricultural Research Service.Crops Research Division
United States.Department of Agriculture.
Washington : U.S. Dept. of Agriculture : For sale by the Supt. of Docs., U.S. Govt. Print. Off.,
1967.
Lotus corniculatus.
Narrowleaf trefoil.
Big trefoil.
Forage plants.